我总是告诉我的孩子们，如果你躺下，人们会从你身上跨过去。但如果你继续挣扎，如果你继续前进，总会有人帮助你。

Never let success get to your head or failure to your heart.

Persistence is key in mathematical research; many great results come from looking at the same problem from different angles over and over again.

The hand remembers what the mind forgets.

如果你不拥抱新事物，你就无法生存。